diff --git a/libp2p/utils/address_validation.py b/libp2p/utils/address_validation.py
index be7f8082..493ed120 100644
--- a/libp2p/utils/address_validation.py
+++ b/libp2p/utils/address_validation.py
@@ -57,13 +57,23 @@ def get_available_interfaces(port: int, protocol: str = "tcp") -> List[Multiaddr
     addrs: List[Multiaddr] = []
 
     # IPv4 enumeration
+    seen_v4: set[str] = set()
     for ip in _safe_get_network_addrs(4):
+        seen_v4.add(ip)
         addrs.append(Multiaddr(f"/ip4/{ip}/{protocol}/{port}"))
 
+    # Ensure loopback IPv4 explicitly present (JS echo parity) even if not returned
+    if "127.0.0.1" not in seen_v4:
+        addrs.append(Multiaddr(f"/ip4/127.0.0.1/{protocol}/{port}"))
+
     # IPv6 enumeration (optional: only include if we have at least one global or loopback)
+    seen_v6: set[str] = set()
     for ip in _safe_get_network_addrs(6):
-        # Avoid returning unusable wildcard expansions if the environment does not support IPv6
+        seen_v6.add(ip)
         addrs.append(Multiaddr(f"/ip6/{ip}/{protocol}/{port}"))
+    # Optionally ensure IPv6 loopback when any IPv6 present but loopback missing
+    if seen_v6 and "::1" not in seen_v6:
+        addrs.append(Multiaddr(f"/ip6/::1/{protocol}/{port}"))
 
     # Fallback if nothing discovered
     if not addrs: